.inline-block {
  display: inline-block;
  vertical-align: middle;
}
#header {
  overflow: hidden;
  width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}
#header #logo {
  display: block;
  width: 220px;
  height: 60px;
  float: left;
  background: url(../static/images/logo.png) no-repeat 0 0;
  background-size: auto 100%;
}
.main {
  width: 900px;
  margin: 20px auto;
  overflow: hidden;
}
.main__bd {
  width: 640px;
  float: left;
}
.main__aside {
  width: 240px;
  float: right;
}
.main .link {
  padding: 20px;
  text-align: center;
  border: 1px solid #c9c9c9;
  background-color: #fff;
  overflow: hidden;
}
.mac-app .main .link {
  border: 1px solid #eee;
}
.main .link.school {
  border-bottom: 0;
}
.main .link .edit {
  border: 1px dashed #c9c9c9;
}
.mac-app .main .link .edit {
  border: 1px dashed #eee;
}
.main .link li {
  width: 20%;
  height: 30px;
  line-height: 30px;
  margin: 15px 0;
  float: left;
}
.main .link li a {
  color: rgba(0, 0, 0, 0.54);
  display: block;
  cursor: pointer;
}
.main .link li a:hover {
  color: #21c494;
}
.footer {
  text-align: center;
}
.footer p {
  line-height: 2;
  font-size: 12px;
  color: rgba(0, 0, 0, 0.54);
}
.f-fix {
  position: fixed;
}
#func {
  position: fixed;
  width: 238px;
  bottom: 100px;
  opacity: 0;
  -webkit-transition: opacity .3s linear;
  transition: opacity .3s linear;
}
#func.f-fix {
  opacity: 1;
}
#func a {
  display: block;
  width: 50px;
  height: 50px;
  margin-left: 20px;
  background: url(../static/images/icon-backtop.png) no-repeat 0 0;
  background-size: 100%;
}
